UK could be at risk of a downgrade, S&P says

Uncertainty looms on all fronts should the U.K. on June 23 vote to leave the European Union, leaving the country's cherished top grade triple A sovereign rating susceptible to a cut, a senior Standards and Poor executive said Wednesday.

Citing short-term financial markets volatility as an immediate risk, global ratings director of the agency's corporate and government ratings, Taron Wade, told CNBC's "Capital Connection" that the risk of the UK losing its rating should it vote to leave the EU would be "great".